The Best Cruise Lines in the World

8. Royal Caribbean International
Though Royal Caribbean is perhaps best known for its mega-ships, it has quite a number of large ships, too—the 3,100-passenger Voyager-class ships, for instance, were once the world’s largest, until Royal Caribbean debuted the larger Freedom class and subsequently the Oasis class. Each class had its own a series of firsts—Voyager of the Seas was the first ship to have an ice rink and a rock-climbing wall, while Freedom of the Seas introduced the first FlowRider surf simulator at sea.